Companies catalogue
- O Room, Yokohama-shi
- OCho, Yokohama-shi
- OK Parking Lot, Yao-shi
- OPU international house "I-wing" (B17), 堺市
- OWL, Ōsaka-shi
- Oasis, Kuwana-shi
- Oasis Orthopedic Clinic, Yokohama-shi
- Obonai Liquor Store, Gonohe-machi
- Obuchi Tatami Shop, Yokohama-shi
- Odagaki Dental Clinic, Fujisawa-shi
- Odai Sushi, Yao-shi
- Odakicho Dental Clinic, Yokosuka-shi
- Odori Park, Yokohama-shi
- Ogasawara Liquor Store, Hachinohe-shi
- Ogasawara Liquor Store, Hachinohe-shi
- Ogata Shrine, Kashiwara-shi
- Ogawa Dental Clinic, Yokohama-shi
- Ogawa Orthopedic Clinic, Yokohama-shi
- Ogawa Orthopedic Clinic, Yokohama-shi
- Ogawachigusa Guitar School, Yokohama-shi
- Ogino Dental Clinic, Yokohama-shi
- Ogoe Nursery, Yokkaichi-shi
- Oguchi Dental Clinic, Zushi-shi
- Ogura Iron Works, Kuwana-shi
- Ogura Orthopedic Clinic, Yokohama-shi
- Ohana Bar La, Yao-shi
- Ohana Orthopedic Clinic, Yokohama-shi
- Oikawa Acupuncture, Yokohama-shi
- Oimatsuchonai Hall, Yokohama-shi
- Oizumi Shinden Shuraku Center, Inabe-shi
- Oji Choritsu Ojiminami Kindergarten, Ōji-chō
- Oji Taxis, Ōji-chō
- Oka Animal Clinic, Yokohama-shi
- Oka Dental Clinic, Yao-shi
- Oka Dental Clinic, Yokohama-shi
- Okada Dental Clinic, Yao-shi
- Okamoto Clinic, Inabe-shi
- Okamoto Dental Clinic, Yao-shi
- Okamoto Dental Clinic, Yokohama-shi
- Okamoto Ear, Nose And Throat Clinic, Kashiwara-shi
- Okamoto Obstetrics And Gynecology, Kashiwara-shi
- Okamoto dental clinic, Kashiwara-shi
- Okamotoshinkyu Orthopedic Clinic, Yao-shi
- Okawa Orthopedic Clinic, Yokohama-shi
- Okazaki Dental Clinic, Yokohama-shi
- Okita Clinic, Yao-shi
- Okouchi Orthopedic Clinic, Kashiwara-shi
- Okumura Dental Clinic, Yao-shi
- Okuno Clinic, Ōsaka-shi
- Okuoka Iron Works, Inabe-shi
- Okusei Motorcycle Store, Hirono-chō
- Okuyama, Hirono-chō
- Olive Dental Clinic, 横浜市
- Omi Liquor Store, Hachinohe-shi
- Onaga Dentistry, Toin
- OnePark 南上小坂, Higashiōsaka-shi
- Ono Dental Clinic, Yokohama-shi
- Ono Dental Clinic, Yokohama-shi
- Ono Dental Clinic, Yokohama-shi
- Oppama Dental Clinic, Yokosuka-shi
- Oppama Kokusai Dental Clinic, Yokosuka-shi
- Oppama Orthopedic Clinic, Yokosuka-shi
- Oppamaginza Orthopedic Clinic, Yokosuka-shi
- Oriden Dental Clinic, Yao-shi
- Osaka City Shinyokinko Eiwa Shiten, Higashiōsaka-shi
- Osaka City Shinyokinko Fuse Shiten, Higashiōsaka-shi
- Osaka City Shinyokinko Hozenji Shiten, Kashiwara-shi
- Osaka City Shinyokinko JR Yao Ekimae Shiten, Yao-shi
- Osaka City Shinyokinko Yamamoto Shiten, Yao-shi
- Osaka City Shinyokinko Yaokita Shiten, Yao-shi
- Osaka City University Abeno Campus, Ōsaka-shi
- Osaka Family Court, Ōsaka-shi
- Osaka Prefecture Police Hiraoka Police Station, Higashiōsaka-shi
- Osaka Shiritsu Hasegawa Elementary School, Kashiwara-shi
- Osakafu Police Headquarters Kisha Club Yukan Reporter Club, Ōsaka-shi
- Osakafu Tachikashiwarahigashi High School, Kashiwara-shi
- Osakakoinoniwa Nursing Home, Kashiwara-shi
- Osakaoshokokubuten, Kashiwara-shi
- Osakashiritsunagayoshi Kindergarten, Ōsaka-shi
- Osakashokoshinyokinkoyaominami Shiten, Yao-shi
- Osawa Dental Clinic, Yokohama-shi
- Osawa Dental Clinic, Yokohama-shi
- Oshikiri Bridge, Yokohama-shi
- Ota Dental Clinic, Yokohama-shi
- Otani Animal Clinic, Kuwana-shi
- Otomo Orthopedic Clinic, Yokohama
- Otorizuka Kofun, Fujiidera-shi
- Otsuchihohomukyokuhikoneshikyoku, Hikone-shi
- Otsuka Dental Clinic, Yokohama-shi
- Otsuka Motorcycle Store, Hachinohe-shi
- Otsuki Iron Works, Inabe-shi
- Oya Animal Clinic, Yamato-shi
- Oya Dental Clinic, Kashiwara-shi
- Oyama Bridge, 葉山町
- Oyamada Lumber Co, Gonohe-machi
- Oyamadakita Nursery, Kuwana-shi
- Ozasa Dental Clinic, Yokohama-shi
- Ozawa Animal Clinic, Ayase-shi
- Ozawaharikyu Clinic, Yokohama-shi
- octa（オクタ）, Yokkaichi-shi